▲ 311 r/Doom
Doomguy being God (Davoth) was hinted at as early as Doom 1.
In the final level of Doom 1 Episode 2, we see Doomguy reach the Tower of Babel. He kills the lord of the tower, the Cyberdemon, which likely damaged the demon's faith in their leaders, based on how another Cyberdemon is getting ganged up on in Tricks and Traps. While Doomguy didn't scatter their languages, his actions at the Tower tore a rift in the demons power structure, which is hinted at in Doom 2's Gotcha! level, where a Cyberdemon and Spider Mastermind fight. Doomguy shattered the demons morale and cooperation, just as God did to the sinners who tried to reach his domain.
u/ThunderousFist — 22 hours ago